Update movepick.h

adding a comment
official-stockfish · Oct 3, 2024 · 62e48aa · 62e48aa
1 parent 818f4b2
commit 62e48aa
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/src/movepick.h b/src/movepick.h
@@ -135,6 +135,8 @@ enum StatsType {
 // see https://www.chessprogramming.org/Butterfly_Boards (~11 elo)
 using ButterflyHistory = Stats<int16_t, 7183, COLOR_NB, int(SQUARE_NB) * int(SQUARE_NB)>;
 
+// LowPlyHistory is adressed by play and move's from and to squares, used
+// to improve move ordering near the root
 using LowPlyHistory = Stats<int16_t, 7183, 4, int(SQUARE_NB) * int(SQUARE_NB)>;
 
 // CapturePieceToHistory is addressed by a move's [piece][to][captured piece type]